Earplug



FIG. 1 is a top perspective view of a new, original, and ornamental design for an earplug.

FIG. 2 is a front view thereof, the rear view, left view and right view being identical thereto;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a cross-sectional view taken at line 5-5 of FIG. 3.

The broken line showing portions of the article is included for the purpose of illustrating environmental structure and forms no part of the claimed design. Any shading is provided to illustrate contour only and is not an indication of surface texture. 

CLAIM The ornamental design for an earplug, as shown and described. 